In pictures: World leaders' trains, planes and automobiles

Kim's aircraft drew obvious comparisions with US President Obama's Air Force
One. Technically Air Force One is the call sign of any Air Force aircraft
carrying the President. However in practice it is used to refer to one of
two highly customised Boeing 747 planes used to transport the president.
Capable of refuelling mid-air, Air Force One has unlimited range. It would
be able to function as a mobile command centre in the event of an attack on
the United States, with advanced communications equipment. The President has
4,000sq ft of floor space on three levels. The Presidential suite features a
large office, lavatory, and conference room. Air Force One also includes a
medical suite that can function as an operating room, and a doctor is
permanently on board. The plane’s two food preparation galleys can feed 100
people at a time. The quarters for those who accompany the president are
slightly less opulent.